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| roller welding; mash seam welding | |||
| mash seam weld (接); mash seam welding (接); roll welding (接) | |||
| mash seam weld; roll welding | |||
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| mash seam welding | |||
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滚压 焊 : 8 phrases in 3 subjects |
| Metallurgy | 5 |
| Steel production | 1 |
| Technology | 2 |
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